JPS5910419Y2 - clutch disk - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a clutch disk used in a friction clutch.

Conventional clutch discs of this type, particularly clutch discs that are interposed between the drive-side flywheel of an automobile and a pressure plate facing the drive side, and are frictionally connected to the flywheel by the pressure contact force of the pressure plate. is structured as shown in Figure 1.

That is, friction washers 2 made of wear-resistant material are provided on both sides of the clutch hub 1, which has an internally toothed spline 1a that engages with an externally toothed spline formed on the outer periphery of a transmission input shaft (not shown). Furthermore, a pair of side plates 3 and 4 are fitted from the outside and integrally caulked together with pins 5.

Further, springs 6 are installed in windows 3a, 4a, and 1a provided between the side plates 3 and 4 and the hub 1, respectively, so that they are elastically engaged in the circumferential direction.

On the peripheral edge of one side plate 3, a plurality of cushioning plates 7 are arranged in the circumferential direction,
The inner peripheral edges of each are fixed with rivets 8.

These cushioning plates 7... have a pair of facings 9, 9 arranged on both sides of the cushioning plates 7...
This is because it is fixed at...

Therefore, in this structure, when a pressing force is applied to both outer sides of the facings 9 by the flywheel F and the pressure plate P, the cushioning plate 7 slides in the circumferential direction and in the thickness direction in response to the applied external force. This alleviates the deflection and rapid increase and decrease in the pressing force between the flywheel F and pressure plate P and the facings 9, 9.

Power is transmitted from the facings 9, 9 to the cushioning plate 7, and further transmitted to the hub 1 and the transmission input shaft via the side plates 3, 4.

The spring 6 interposed between the side plates 3, 4 and the hub 1 can absorb and alleviate fluctuations in rotational force.

However, in the clutch disc mentioned above,
Although rivets 10 are used to fix the facings 9, 9 and the cushioning plate 7, there is a problem in that the large number of rivets makes the crimping work of the rivets 10 cumbersome.

In addition, in this configuration, the wear limit dimension t of the facings 9, 9 is regulated by the head size of the rivet 10, as seen in FIG. 1, so there is a problem that the entire thickness of the facings cannot be effectively utilized.

For this reason, attempts have been made to bond the facing to the cushioning plate, but the corrugated plate did not allow sufficient adhesive area to be secured between the facing and the facing, and due to strength issues, it was not put into practical use. has not arrived yet.

This invention was developed with the above in mind, and consists of flat cushioning plates arranged opposite each other in the thickness direction, and shaped tongues of the plates elastically abutted against the opposing plates. By adhering the facing to the outer surface of the plate, the rivet caulking work is omitted and assembly workability is improved, and the thickness of the facing is effectively utilized to extend the life of the plate. On the other hand, it is an object of the present invention to provide a clutch disc that does not cause problems in mounting strength of facings.

This invention will be explained below with reference to embodiments shown in the drawings.

Figure 2 is a front view of the clutch disk of this invention, Figure 3
The figure is a sectional view taken along the line II--II in FIG. 2.

In this figure, parts that are the same as those shown in FIG. 1 are designated by the same reference numerals, and explanations thereof will be omitted.

In this clutch disk, 11. Reference numeral 12 denotes cushioning plates arranged on both sides of the peripheral edge of one side plate 3, which are equally spaced in the circumferential direction.
The inner circumferential portion thereof is integrally fixed with rivets 8.

These cushioning rates 11 and 12 are the fourth
As shown in the figure, one plate 11 (the other plate 12 is symmetrical) is made of a substantially fan-shaped elastic metal flat plate.

The key part of the cushioning plate 11 has an insertion hole 13 for the fixing rivet 8 described above, and a caulking hole 14 for a balance piece (not shown) that is attached to correct the imbalance of the clutch disc as a whole. It takes shape.

Further, in a portion corresponding to the fan surface, a tongue piece 16 is drawn by cutting out and raising a part of the cushioning play Hl, 12 by a substantially U-shaped groove 15, and in this way, the cushioning play Hl, A cushioning plate integrally formed with and facing 12. As shown in FIG. 5, the tongue piece 16 provided at a position symmetrical to the side of the cushioning plate 11 is bent so as to project somewhat toward the other cushioning plate side, and the tongue piece 16 of each play}11, 12 is bent. 16 are shaped so as to elastically abut each other.

On the other hand, on the outer surfaces of the cushioning plates 11 and 12, facings 17 and 17 each having an annular shape are provided.
17 is fixed with adhesive.

Then, a plurality of through holes (air holes) 18 are bored in the thickness direction of the facings 17, 17 and each of the cushioning plates Hl, 12, so that the facings and the flywheel when the clutch is disengaged are formed. Alternatively, it facilitates separation from the pressure plate.

According to the above structure, when pressure force is applied from both outsides of the facings 17, 17 by the pressure play }P and the flywheel F, the cushioning play Hl,1
2, the tongue pieces 16, 16 are elastically deformed in the thickness direction while being pressed against each other.

Therefore, even if pressure contact force is suddenly applied, this can be alleviated.

Further, it goes without saying that the action of the spring 6 can absorb and alleviate fluctuations in rotational force.

In this way, according to this configuration, the clutch action is functionally similar to that of the conventional one, but facing 17.
17 and the cushioning plate Hl, 12 are bonded with adhesive, which eliminates the need for troublesome caulking work, making it easy to assemble the disc, and since there are no rivets, almost the entire thickness of the facing can be removed. The disk can be used effectively until it wears out, extending the life of the disk.

Furthermore, since the facing is bonded to the entire surface of the cushioning plate except for the tongue piece, a sufficient bonding area can be obtained and sufficient bonding strength can be achieved.

FIG. 6 shows another embodiment.

In this embodiment, a pair of cushioning plates IIA,
12A is integrally fixed to one side of side play 1-3.

For this reason, each cushioning play 1-11A, 12A
is bent slightly outward at the base, thereby causing the tongue 16
, both plays corresponding to the thickness direction dimension of 16) - 1
The facing distance d is 1 A and 12 A.

In addition, FIGS. 7 and 8 show the cushioning plate 1.
1 B, 12 A play in which the tongues 16B and 16B each shaped as B are used to face each other} 11 B, 12
The tongue pieces 16B, 16B are arranged alternately in the circumferential direction between the tongue pieces 16B, 16B, and each tongue piece 16B, 16B directly contacts the inner surface of the opposing plate 11B, 12B. be.

As explained above, according to this invention, the tongue pieces formed on the opposing cushioning plates are brought into elastic contact with the opposing plates, while the facings are bonded to the outer surfaces of the plates. Therefore, it is possible to improve the ease of assembling the clutch disk by eliminating the need for caulking with rivets when installing the facing, and to extend the life of the clutch disk by effectively utilizing the thickness of the facing. This has a great practical effect in that the fixing strength of the facing can be maintained at a sufficiently high level.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional clutch disc, Fig. 2 is a front view of the clutch disc of this invention, Fig. 3 is a sectional view taken along line III-III in Fig. 2, and Fig. 4 is a cross-sectional view of the cushioning plate. 5 is a partial plan view of a clutch disc, FIG. 6 is a partial sectional view of another embodiment, and FIG. 7 is a front view of a cushioning plate of still another embodiment.
The figure is a partial plan view of the clutch disc. 1...Clutch hub, 3, 4...Side plate, 6...Spring, 11, 11
A, 11 B, 12, 12A, 12B...
...Cushioning plate, 16.16B...
・Tongue piece, 17...Facing, 18...
・Air hole.

Claims (1)

[Scope of utility model registration request] In a clutch disc that is interposed between a flywheel and a pressure plate, and is configured to frictionally engage with the flywheel and pressure plate to transmit rotational force by the pressure force generated between the two, the inner periphery of the clutch disc is By providing cushioning plates facing each other in the thickness direction of the clutch disk and fixing the parts to the clutch hub, a part of the cushioning plate is cut out and raised on the facing side of each cushioning plate. A tongue piece that is integrally formed with the cushioning plate and that elastically abuts against the opposing disk side is formed to protrude,
A clutch disc characterized in that facings are fixed to the outer surfaces of each cushioning plate.